Electric current
Also: current, amperage
The rate at which electric charge crosses a boundary.
Conventional current is dq/dt; its value follows the complete circuit, source limits, and load rather than being independently pushed into every device.
- Units
- ampere (A = C/s)
- Formula
I = dq/dt
Example 0.25 A for 8 s transfers 2 C.
Common misconception Current in amperes is not battery capacity in ampere-hours.